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Close-up of folds in rock This is the Yr Allt formation (Ashgill series) in Llangrannog Cardigan Bay Wales UK by ROBERT BROOKSCIENCE PHOTO LI
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Carreg Bica named after a mythical giant is a sea stack formed from slumped beds of the Yr Allt Formation (Ashgill series) of Ordovician mudstone an
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Evolution of land plants illustration Land plants evolved from green algae that started to colonise land 500 million years ago Early plants were si
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Coastal cliffs Wales
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Coastal cliffs Wales
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Coastal cliffs Wales
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Anisclo Gorge Ordesa National Park Spanish Pyrenees
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Folds in rock Cemaes Head Pembrokeshire Wales UK A plunging anticline is exposed These are the highest cliffs in Pembrokeshire at over 175m in
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Folds in rock Cemaes Head Pembrokeshire Wales UK
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Trilobite Fossil trilobite Neoasaphus punctatus from the Ordovician period (525-440 million years ago) This species represents an intermediate evo
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Fossil trilobite
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Fossil trilobite
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Fossil sea urchin spines
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Artwork of Orthoceras regulare This animal was a nautiloid cephalopod that lived in the oceans during the mid-Ordovocian age 470-460 million years a
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Artwork of Orthoceras regulare This animal was a nautiloid cephalopod that lived in the oceans during the mid-Ordovocian age 470-460 million years a
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Slate quarry waste
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Fossil trilobites
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Acanthochitona fossil
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Cystoid fossil
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Palaeozoic animals Artwork of various species of marine animal that existed in different periods of the Palaezoic era (between around 570 to 300 mill
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Starfish (Stenaster obtusus) Upper surface of starfish Ordovician Photo by DK IMAGESSCIENCE PHOTO LIBRARY
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Starfish fossil
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Astraspis prehistoric fish illustration
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Crinoids
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Featherstar arms Close-up of the arms of the featherstar Comantheria briareus Featherstars or crinoids are primitive echinoderms relatives of sta
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Rotating clouds over the limestone cliffs and montane pine and beech woodland in the Ordesa y Monte Perdido National Park Spanish Pyrenees by BOB G
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Rotating clouds over the limestone cliffs and montane pine and beech woodland in the Ordesa y Monte Perdido National Park Spanish Pyrenees by BOB G
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Ordovician mass extinction illustration During the Ordovicianilurian extinction event also known as the Late Ordovician mass extinction (LOME) ar
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Illustration of an Ogyginus trilobite This arthropod lived 500-300 million years ago during the Ordovician period in what is now Wales by MARK P W
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Trilobite fossil Close-up of the head of the fossilised Trevoropyge prorotundifrons trilobite showing the eyes (centre left and right) The trilobit
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Arandaspis prehistoric fish artwork This extinct aquatic vertebrate lived in the Ordovician period about 500 million years ago Arandaspis was a pr
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Arandaspis prehistoric fish artwork This extinct aquatic vertebrate lived in the Ordovician period about 500 million years ago Arandaspis was a pr
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Trilobite fossil Fossil of a trilobite (Asaphus platyurus latisegmentatus) from the Ordovician period (around 490 to 445 million years ago) Trilobit
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Trace fossils in sandstone These fossils known as Cruziana are the fossilised remains of excavation marks left by Trilobite organisms These indica
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Orthoceras fossils Orthoceras is an extinct marine cephalopod related to the squid and octopus It lived between about 470 and 360 million years ago
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Crinoid fossils
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Fossil crinoid
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Fossil invertebrate colony Sectioned fossilized colony of bryozoans (Diplotrypa petropolitana) Bryozoans are aquatic animals that form colonies of i
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Trilobite fossil
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Trilobite fossil Fossil of the trilobite Trevoropyge prorotundifrons The trilobites are an extinct group of marine arthropods with a hard segmented
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Trilobite fossil Fossilised Selenopeltis buchi trilobite This trilobite lived during the Ordovician period (around 505-438 million years ago) The t
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Trilobite fossil Fossilised Isotelus sp trilobite This trilobite lived during the Ordovician period (around 505-440 million years ago) The trilobi
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Trilobite fossil
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Trilobite fossil
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Sea urchin fossil Fossilised sea urchin (class Echinoidea) embedded in rock The sea urchins spines which had a protective function can be clearl
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Fossil crinoid or sea lily
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Trilobite Fossil trilobite Neoasaphus Kowalewskii from the Ordovician period (525-440 million years ago) This species has eyes on the end of long
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Brachiopods Assemblage of fossil brachiopods Dalmanella sp from the Ordovician Period (500- 435 million years ago) Dalmanella sp are seen as the
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These fossil star-fishes Lapworthura miltoni originate from the Orovician Period approximately 450 million years ago Specimens like this are rare
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Trilobite fossil Fossilised Bathycheilus sp trilobite The trilobites are an extinct group of marine arthropods with a hard segmented shell that is
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A mixed assemblage of fossils from the Ordovician period (500 to 435 million years ago) including brachiopods and crinoids The specimen was found in
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Trilobite Ogyginus
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Trilobite Ogyginus
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Trilobite Anebolithus
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Fossil trilobite Lloydolithus lloydi (Murchison) from the Ordovician period (500 to 435 million years ago) found in the Meadowtown beds Betton Sh
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Shales at a coast Shale is a sedimentary rock formed by the compression of deposits of clay and mud It forms in horizontal beds These beds have bee
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Mass extinction events over time
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Conceptual illustration depicting a Silurian landscape as the first plants appeared on land During the Silurian Period from 443 million to 416 milli
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Conceptual illustration depicting a Silurian landscape as the first plants appeared on land During the Silurian Period from 443 million to 416 milli
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Upper Borrowdale valley in October Lake District Cumbria 20th century Borrowdale lies within the historic county boundaries of Cumberland the va
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Silurian plants illustration
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Conceptual illustration depicting a Silurian landscape as the first plants appeared on land During the Silurian Period from 443 million to 416 milli
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Conceptual illustration depicting a Silurian landscape as the first plants appeared on land During the Silurian Period from 443 million to 416 milli
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Conceptual illustration depicting a Silurian landscape as the first plants appeared on land During the Silurian Period from 443 million to 416 milli
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Silurian plants illustration
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Conceptual illustration depicting a Silurian landscape as the first plants appeared on land During the Silurian Period from 443 million to 416 milli
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Conceptual illustration depicting a Silurian landscape as the first plants appeared on land During the Silurian Period from 443 million to 416 milli
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Conceptual illustration depicting a Silurian landscape as the first plants appeared on land During the Silurian Period from 443 million to 416 milli
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Conceptual illustration depicting a Silurian landscape as the first plants appeared on land During the Silurian Period from 443 million to 416 milli
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The Selenopeltis slab This slab of sandstone comes from 450 million year old Ordovician rocks of the Mecissi-Alnif area Morocco Three trilobite g
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Silurian plants illustration
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Conceptual illustration depicting a Silurian landscape as the first plants appeared on land During the Silurian Period from 443 million to 416 milli
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Conceptual illustration depicting a Silurian landscape as the first plants appeared on land During the Silurian Period from 443 million to 416 milli
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Silurian plants illustration
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Silurian plants illustration
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Conceptual illustration depicting a Silurian landscape as the first plants appeared on land During the Silurian Period from 443 million to 416 milli
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Conceptual illustration depicting a Silurian landscape as the first plants appeared on land During the Silurian Period from 443 million to 416 milli
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Conceptual illustration depicting a Silurian landscape as the first plants appeared on land During the Silurian Period from 443 million to 416 milli
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Silurian plants illustration
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The Selenopeltis slab This slab of sandstone comes from 450 million year old Ordovician rocks of the Mecissi-Alnif area Morocco Three trilobite g
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Ordovicianilurian mass extinction illustration The Ordovicianilurian extinction event also known as the Late Ordovician mass extinction (LOME)
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Ordovicianilurian mass extinction illustration The Ordovicianilurian extinction event also known as the Late Ordovician mass extinction (LOME)
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Ordovicianilurian mass extinction illustration The Ordovicianilurian extinction event also known as the Late Ordovician mass extinction (LOME)
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Ordovicianilurian mass extinction illustration The Ordovicianilurian extinction event also known as the Late Ordovician mass extinction (LOME)
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Ordovicianilurian mass extinction illustration The Ordovicianilurian extinction event also known as the Late Ordovician mass extinction (LOME)
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Ordovicianilurian mass extinction illustration The Ordovicianilurian extinction event also known as the Late Ordovician mass extinction (LOME)
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Ordovicianilurian mass extinction illustration The Ordovicianilurian extinction event also known as the Late Ordovician mass extinction (LOME)
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Trilobites in Palaeozoic sea illustration Trilobites were a diverse group of extinct marine arthropods that first appeared in the fossil record in t
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Trilobites in Palaeozoic sea illustration Trilobites were a diverse group of extinct marine arthropods that first appeared in the fossil record in t
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Fossil crinoids or sea lilies These are marine invertebrates classified along with starfish as echinoderms The formation of this limestone rock ha
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Trilobites in Palaeozoic sea illustration Trilobites were a diverse group of extinct marine arthropods that first appeared in the fossil record in t
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Trilobites in Palaeozoic sea illustration Trilobites were a diverse group of extinct marine arthropods that first appeared in the fossil record in t
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Trilobites in Palaeozoic sea illustration Trilobites were a diverse group of extinct marine arthropods that first appeared in the fossil record in t
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Trilobites in Palaeozoic sea illustration Trilobites were a diverse group of extinct marine arthropods that first appeared in the fossil record in t
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Trilobites in Palaeozoic sea illustration Trilobites were a diverse group of extinct marine arthropods that first appeared in the fossil record in t
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Trilobites in Palaeozoic sea illustration Trilobites were a diverse group of extinct marine arthropods that first appeared in the fossil record in t
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Trilobites in Palaeozoic sea illustration Trilobites were a diverse group of extinct marine arthropods that first appeared in the fossil record in t
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Trilobites in Palaeozoic sea illustration Trilobites were a diverse group of extinct marine arthropods that first appeared in the fossil record in t
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Trilobites in Palaeozoic sea illustration Trilobites were a diverse group of extinct marine arthropods that first appeared in the fossil record in t
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Fossil crinoid or sea lily (Scyphocrinites elegans) Crinoids are marine echinoderms dating back to the Lower Ordovician period (500 million years ago
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